clutch JAGUAR XFR 2010 1.G Workshop Manual

Bus Topology of a
communication
network Coast Clutch Solenoid CCS Camshaft Position CMP Indicates camshaft position Carbon dioxide CO² Colorless gas with a density of approximately 1.5 times that of air Carbon monoxide CO Poisonous gas produced as the result of incomplete combustion Chlorofluorocarbon CFC Catalytic converter
In-line exhaust system device used to reduce the level of engine exhaust
emissions Celsius C
SI term for the Centigrade scale, with freezing point at zero and boiling point at 100 degrees Compact Disc CD Cylinder Head Temperature
Sensor CHT Sensor A sensor for measuring the temperature of the cylinder head Central Junction Box CJB Crankshaft Position CKP Indicates crankshaft position Clutch Pedal Position CPP Indicates clutch pedal position Controller Area Network CAN
A communication system which allows control modules to be linked together Constant Velocity CV Cubic centimeter cm³ Central Security Module CSM Electronic module to support security system functionality Data Link Connector DLC
Connector providing access and/or control of the vehicle information, operating conditions, and diagnostic information Driver Door Module DDM Electronic module to support driver door functionality Driver Seat Module DSM Electronic module to support driver seat functionality Daytime Running Lamps DRL Deutsche Institut fur Normung DIN German standards regulation body Diagnostic Trouble Code DTC
An alpha/numeric identifier for a fault condition identified by the On-Board Diagnostic (OBD) system Direct current dc
Current which flows in one direction only, though it may have appreciable pulsations in its magnitude Domestic Data Bus D2B Digital Versatile Disc DVD Electronic Automatic Temperature Control EATC
Exhaust Gas Recirculation EGR Exhaust Gas Recirculation Temperature Sensor EGRT Sensing EGR function based on temperature change Electronic Brake Force
Distribution EBD
Engine Control Module ECM Electronic module to support engine functionality Electronic Crash Sensor ECS Sensor to measure severity of impact Engine Coolant Temperature ECT Engine Oil Pressure EOP European On-Board Diagnostic EOBD Electronic Pressure Control EPC Electrically Erasable
Programmable Read-Only Memory EEPROM
Erasable Programmable
Read-Only Memory EPROM
Evaporative Emission EVAP
System designed to prevent fuel vapor from escaping into the atmosphere. Typically includes a charcoal filled canister to absorb fuel vapor Flash Electrically Erasable
Programmable Read-Only Memory FEEPROM
Front Electronic Module FEM Flash Erasable Programmable
Read-Only Memory FEPROM
Frequency Modulation FM Fuel Pump Driver Module FPDM Fuel Rail Pressure FRP Generic Electronic Module GEM Ground GND
Electrical conductor used as a common return for an electrical circuit or
circuits, and with a relative zero potential Global Positioning System GPS Global System for Mobile
Communication GSM
Gross Vehicle Weight GVW Heated Oxygen Sensor HO2S Electrically heated oxygen sensor which induces fuelling corrections

Programmable Read-only Memory PROM ROM with some provision for setting the stored data after manufacture Portable Support Electronics PSE Power Steering Pressure PSP Polytetrafluoroethylene PTFE Random Access Memory RAM
Fast access memory store which is accessible for entry or extraction of
data Read Only Memory ROM Fast access memory in which data is fixed and may not be changed Restraints Control Module RCM
Electronic module to support functionality of the Supplemental Restraints System Radio Data System RDS Rear Electronic Module REM Remote Keyless Entry RKE Right-hand RH Right-hand drive RHD Research Octane Number RON Rear Seat Module RSM Electronic module to support functionality of rear seats Supercharger SC
An intake system which utilizes a supercharger (mechanically driven
device that pressurizes intake air, thereby increasing density of charge air
and the consequent power output from a given displacement) Serial Communications Link SCL Standard Corporate Protocol SCP
A high-speed, serial communications system linking all body system
control modules. Control messages and data are passed between modules
at up to 786 messages per second Supplemental Restraints System SRS
Shift Solenoid SS Controls shifting in an automatic transmission Seat Control Module SCM
Module controlling the seat motor systems (not electric raise/lower-only seats) Secondary Air Injection AIR
System used for a period of time each time the engine is started, unless
certain temperature criteria are met. Pumps air directly into the exhaust
system which generates extra heat and reduces the time taken for the catalytic converters to reach operating temperature Service Repair Operation
(number) SRO
Number generated by Jaguar Methods & Techniques system which relates
to the time allowed to complete a repair operation. Further information on
the system can be found in the separate Jaguar Publications (for each
model range) entitled 'Repair Operation Times' Society of Automotive Engineers SAE
Timing/Coast Clutch Solenoid T/CCS Torque Converter Clutch TCC Transmission Control Indicator
Lamp TCIL
Throttle Position TP Top Dead Center TDC Transmission Control Module TCM Controls the shifting pattern of the (automatic) transmission Transmission Control Switch TCS Modifies the operation of electronically controlled transmissions Transmission Fluid Temperature TFT Indicates temperature of transmission fluid Transmission Range TR The range in which the transmission is operating Turbine Shaft Speed TSS Indicates rotational speed of transmission output shaft or turbine shaft Variable Assist Power Steering VAPS Variable Camshaft Timing VCT
A system by which the relationship of the crankshaft and camshaft may be
altered during engine running Vehicle Identification Number VIN
Number assigned to the vehicle by the manufacturer, primarily for licensing and identification purposes Vehicle Speed Sensor VSS Sensor which provides vehicle speed information Worldwide Diagnostic System WDS Jaguar approved diagnostic system Wide Open Throttle WOT Full throttle position www.JagDocs.com

DTC Description Possible Causes Action B1082-49
Right Temperature
Damper Motor -
Internal electronic
failure
Right hand blend
stepper motor internal
electronic failure
Suspect the right hand blend stepper motor. Check and
install a new stepper motor as required, refer to the new
module/component installation note at the top of the DTC
Index B1083-01
Recirculation
Damper Motor -
General electrical
failure
RECIRC servo motor
circuits - short to
ground, power, open
circuit
Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the
electrical circuit diagrams and check RECIRC servo motor
circuit for short to ground, power, open circuit B1085-00
Defroster Damper
Motor - No sub
type information
Defrost stepper motor
internal or external
fault
Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system B1085-49
Defroster Damper
Motor - Internal
electronic failure
Defrost stepper motor
internal electronic
failure
Suspect the defrost stepper motor. Check and install a new
stepper motor as required, refer to the new
module/component installation note at the top of the DTC
Index B1086-00
Air Distribution
Damper Motor -
No sub type
information
Panel/foot stepper
motor internal or
external fault
Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system B1086-49
Air Distribution
Damper Motor -
Internal electronic
failure
Panel/foot stepper
motor internal
electronic failure
Suspect the panel/foot stepper motor. Check and install a
new stepper motor as required, refer to the new
module/component installation note at the top of the DTC
Index B1087-88
LIN Bus "A" - Bus
off
LIN Bus power #1
circuit - open circuit
Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the
electrical circuit diagrams and check LIN Bus power #1
circuit for open circuit B1088-88
LIN Bus "B" - Bus
off
LIN Bus power #2
circuit - open circuit
Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the
electrical circuit diagrams and check LIN Bus power #2
circuit for open circuit B11ED-68
Electric Heater
Control Module -
Event information
Event information.
Electric heater - invalid
communication
message
Clear DTC. With engine coolant temperature low, set
climate temperature to high and re-test. If DTC remains in
isolation suspect the PTC heater, check and install a new
heater as required, refer to the new module/component
installation note at the top of the DTC Index. If additional
LIN related DTCs are logged refer to the Actions for these
DTCs B11ED-87
Electric Heater
Control Module -
Missing message
Electric heater -
missing communication
message
Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system B11ED-96
Electric Heater
Control Module -
Component
internal failure
Component internal
failure
Suspect the PTC heater, check and install a new heater as
required, refer to the new module/component installation
note at the top of the DTC Index B11ED-98
Electric Heater
Control Module -
Component or
system over
temperature
Component or system
over temperature
Clear DTC. With engine coolant temperature low, set
climate temperature to high and re-test. If DTC remains
suspect the PTC heater, check and install a new heater as
required, refer to the new module/component installation
note at the top of the DTC Index B11EE-01
A/C Compressor -
General electrical
failure
Air conditioning
compressor clutch
solenoid circuits - short
to ground, power, open
circuit
Carry out any pinpoint tests associated with this DTC using
the manufacturer approved diagnostic system. Refer to the
electrical circuit diagrams and check air conditioning
compressor clutch solenoid circuits for short to ground,
power, open circuit

DTC Description Possible Causes Action ground, power, open circuit B10CA-1F
Left Rear Door Handle
Antenna - Circuit
intermittent
Circuit intermittent -
general electrical error
Carry out any pinpoint tests associated with this
DTC using the manufacturer approved diagnostic
system. Refer to the electrical circuit diagrams and
check left rear door handle antenna circuits for short
to ground, power, open circuit B10CB-1F
Right Rear Door Handle
Antenna - Circuit
intermittent
Circuit intermittent -
general electrical error
Carry out any pinpoint tests associated with this
DTC using the manufacturer approved diagnostic
system. Refer to the electrical circuit diagrams and
check right rear door handle antenna circuits for
short to ground, power, open circuit B10CC-24
Left Front Latch Clutch
Switch - Signal stuck
high
Signal stuck high - button
stuck in active position
Check for stuck left front door latch clutch switch.
Refer to the electrical circuit diagrams and check
left front door latch clutch switch circuit for short to
ground B10CD-24
Left Rear Latch Clutch
Switch - Signal stuck
high
Signal stuck high - button
stuck in active position
Check for stuck left rear door latch clutch switch.
Refer to the electrical circuit diagrams and check
left front door latch clutch switch circuit for short to
ground B10CE-24
Right Front Latch
Clutch Switch - Signal
stuck high
Signal stuck high - button
stuck in active position
Check for stuck right front door latch clutch switch.
Refer to the electrical circuit diagrams and check
left front door latch clutch switch circuit for short to
ground B10CF-24
Right Rear Latch Clutch
Switch - Signal stuck
high
Signal stuck high - button
stuck in active position
Check for stuck right rear door latch clutch switch.
Refer to the electrical circuit diagrams and check
left front door latch clutch switch circuit for short to
ground B10D1-24 Left Front Lock Button
- Signal stuck high
Signal stuck high - button
stuck in active position
Check for stuck left front door handle lock switch.
Refer to the electrical circuit diagrams and check
left front door latch clutch switch circuit for short to
ground B10D2-24
Left Rear Lock Button -
Signal stuck high
Signal stuck high - button
stuck in active position
Check for stuck left rear door handle lock switch.
Refer to the electrical circuit diagrams and check
left front door latch clutch switch circuit for short to
ground B10D3-24
Right Front Lock
Button - Signal stuck
high
Signal stuck high - button
stuck in active position
Check for stuck right front door handle lock switch.
Refer to the electrical circuit diagrams and check
left front door latch clutch switch circuit for short to
ground B10D4-24 Right Rear Lock Button
- Signal stuck high
Signal stuck high - button
stuck in active position
Check for stuck right rear door handle lock switch.
Refer to the electrical circuit diagrams and check
left front door latch clutch switch circuit for short to
ground U0010-00
Medium Speed CAN
Communication Bus -
No subtype information
No subtype information
Carry out any pinpoint tests associated with this
DTC using the manufacturer approved diagnostic
system. Carry out CAN network integrity test using
the manufacturer approved diagnostic system U0140-00
Lost Communication
With Body Control
Module - No subtype
information
Missing message from
CJB
Carry out any pinpoint tests associated with this
DTC using the manufacturer approved diagnostic
system. Carry out CAN network integrity test using
the manufacturer approved diagnostic system. Refer
to the electrical circuit diagrams and check power
and ground supplies to CJB

DTC Description Possible Causes Action P0721-64
Output Shaft Speed
Sensor Circuit
Range/Performance -
Signal plausibility failure
Signal plausibility failure
Clear DTC and test. If code re-detects suspect the
Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. P0729-07
Gear 6 Incorrect Ratio -
Mechanical Failures
Gear Ratio Monitoring.
Mechanical Failures
Check and correct oil level. Clear DTC. If code
re-detects suspect Transmission (mechanical)
internal fault. Install a new Transmission as
required, refer to the warranty policy and
procedures manual if a module/component is
suspect. P0731-07
Gear 1 Incorrect Ratio -
Mechanical Failures
Gear Ratio Monitoring.
Mechanical Failures
Check and correct oil level. Clear DTC. If code
re-detects suspect Transmission (mechanical)
internal fault. Install a new Transmission as
required, refer to the warranty policy and
procedures manual if a module/component is
suspect. P0732-07
Gear 2 Incorrect Ratio -
Mechanical Failures
Gear Ratio Monitoring.
Mechanical Failures
Check and correct oil level. Clear DTC. If code
re-detects suspect Transmission (mechanical)
internal fault. Install a new Transmission as
required, refer to the warranty policy and
procedures manual if a module/component is
suspect. P0733-07
Gear 3 Incorrect Ratio -
Mechanical Failures
Gear Ratio Monitoring.
Mechanical Failures
Check and correct oil level. Clear DTC. If code
re-detects suspect Transmission (mechanical)
internal fault. Install a new Transmission as
required, refer to the warranty policy and
procedures manual if a module/component is
suspect. P0734-07
Gear 4 Incorrect Ratio -
Mechanical Failures
Gear Ratio Monitoring.
Mechanical Failures
Check and correct oil level. Clear DTC. If code
re-detects suspect Transmission (mechanical)
internal fault. Install a new Transmission as
required, refer to the warranty policy and
procedures manual if a module/component is
suspect. P0735-07
Gear 5 Incorrect Ratio -
Mechanical Failures
Gear Ratio Monitoring.
Mechanical Failures
Check and correct oil level. Clear DTC. If code
re-detects suspect Transmission (mechanical)
internal fault. Install a new Transmission as
required, refer to the warranty policy and
procedures manual if a module/component is
suspect. P0736-07
Reverse Incorrect Ratio -
Mechanical Failures
Gear Ratio Monitoring.
Mechanical Failures
Check and correct oil level. Clear DTC. If code
re-detects suspect Transmission (mechanical)
internal fault. Install a new Transmission as
required, refer to the warranty policy and
procedures manual if a module/component is
suspect. P0740-13 Torque Converter Clutch
Solenoid Circuit / Open -
Circuit Open
Pressure control solenoid
2 Circuit Open Circuit
Clear DTC and test. If code re-detects suspect the
Transmission Control Module. Install a new
Transmission Control Module as required, refer to
the warranty policy and procedures manual if a
module/component is suspect. P0741-07 Torque Converter Clutch
Solenoid Circuit
Performance/Stuck Off -
Mechanical Failures
Too high slip at torque
converter clutch.
Mechanical Failures
Suspect torque converter lockup clutch. Install a
new torque converter, refer to the warranty policy
and procedures manual if a module/component is
suspect. If transmission fluid is in very poor
condition and dirty, install a new transmission,
refer to the warranty policy and procedures manual
if a module/component is suspect.

DTC Description Possible Causes Action P2725-1E
Pressure Control Solenoid
E Electrical - Circuit
Resistance Out Of Range
Pressure control solenoid
E circuit resistance out of
range
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2727-14
Pressure Control Solenoid
E Control Circuit / Open -
Circuit Short to Ground or
Open
Pressure Control Solenoid
E Control Circuit Short to
Ground or Open Circuit
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2729-11
Pressure Control Solenoid
E Control Circuit Low -
Circuit Short to Ground
Pressure control solenoid
E Circuit Short to Ground
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2730-12
Pressure Control Solenoid
E Control Circuit High -
Circuit Short to Battery
Pressure control solenoid
E Circuit Short to Power
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2731-04
Pressure Control Solenoid
F - System Internal
Failures
Pressure Control Solenoid
F no sub type information
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2731-48
Pressure Control Solenoid
F - Supervision Software
Failure
Pressure Control Solenoid
F supervision software
failure
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2734-22
Pressure Control Solenoid
F Electrical - Signal
amplitude > maximum
Pressure Control Solenoid
F Electrical signal
amplitude > maximum
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2734-1A
Pressure Control Solenoid
F Electrical-Circuit
Resistance Below Threshold
Pressure control solenoid
F electrical circuit
resistance below
threshold
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2734-1E
Pressure Control Solenoid
F Electrical-Circuit
Resistance Out Of Range
Pressure control solenoid
F electrical circuit
resistance out of range
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2736-14
Pressure Control Solenoid
F Control Circuit / Open -
Circuit Short to Ground or
Open
Pressure Control Solenoid
F Control Circuit Short to
Ground or Open
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2738-11
Pressure Control Solenoid
F Control Circuit Low -
Circuit Short to Ground
Pressure Control Solenoid
F Control Circuit Short to
Ground
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2739-12
Pressure Control Solenoid
F Control Circuit High -
Circuit Short to Battery
Pressure Control Solenoid
F Control Circuit Short to
Power
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2763-12 Torque Converter Clutch
Pressure Control Solenoid
Control Circuit High -
Circuit Short to Battery
Pressure control solenoid
F Circuit Short to Power
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. www.JagDocs.com

DTC Description Possible Causes Action P2764-11 Torque Converter Clutch
Pressure Control Solenoid
Control Circuit Low -
Circuit Short to Ground
Torque converter clutch
pressure control solenoid
control Circuit Short to
Ground
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2764-1A Torque Converter Clutch
Pressure Control Solenoid
Control Circuit Low -
Circuit Resistance Below Threshold
Torque converter clutch
pressure control solenoid
control circuit resistance
below threshold
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2764-1E Torque Converter Clutch
Pressure Control Solenoid
Control Circuit Low -
Circuit Resistance Out Of
Range
Torque converter clutch
pressure control solenoid
control circuit resistance
out of range
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2807-11
Pressure Control Solenoid
G - Circuit Short to
Ground
Park solenoid Circuit
Short to Ground
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2807-12
Pressure Control Solenoid
G - Circuit Short to
Battery
Park solenoid Circuit
Short to Power
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2807-13
Pressure Control Solenoid
G - Circuit Open
Park solenoid Circuit
Open Circuit
Suspect the Transmission Control Module. Install a
new Transmission Control Module as required,
refer to the warranty policy and procedures manual
if a module/component is suspect. P2807-14
Pressure Control Solenoid
G - Circuit Short to
Ground or Open
Park solenoid Circuit
Short to Ground or Open
Circuit
Carry out any diagnostic pinpoint tests associated
with this DTC using the manufacturer approved
diagnostic system. Suspect the Transmission
Control Module. Install a new Transmission Control
Module as required, refer to the warranty policy
and procedures manual if a module/component is
suspect. B1087-82
LIN Bus "A" - Alive /
sequence counter
incorrect / not updated
Alive counter fault
Check Transmission Shift Module for stored DTCs.
Refer to the electrical Circuit diagrams and check
Transmission Control Module to Transmission Shift
Module for Short to Ground or Open Circuit (LIN
Bus) B1087-83
LIN Bus "A" - Value of
signal protection
calculation incorrect
Checksum error
Check Transmission Shift Module for stored DTCs
Refer to the electrical Circuit diagrams and check
Transmission Control Module to Transmission Shift
Module for Short to Ground or Open Circuit (LIN
Bus) B1087-87
LIN Bus "A" - Missing
message
Transmission Shift
Module is NOT visible to
the Transmission Control
Module on the LIN Bus
Check Transmission Shift Module for stored DTCs
Refer to the electrical Circuit diagrams and check
Transmission Control Module to Transmission Shift
Module for Short or Open Circuit (LIN Bus) B1087-88 LIN Bus "A" - Bus off
LIN Bus Circuit fault.
Check hardware of LIN
connection between
transmission and
Transmission Shift
Module
Refer to the electrical Circuit diagrams and check
Transmission Control Module to Transmission Shift
Module LIN bus circuit for Short, Open Circuit.
Check Transmission Shift Module for related DTCs U0001-88
High Speed CAN
Communication Bus - Bus
off
CAN Bus off
Refer to the electrical Circuit diagrams and check
CAN Bus for Circuit fault

it may turn out to be the most important.

2. Do not touch anything until a road test and a thorough visual inspection of the vehicle have been carried out. Leave the
tire pressures and vehicle load just where they were when the condition was first observed. Adjusting tire pressures,
vehicle load or making other adjustments may reduce the conditions intensity to a point where it cannot be identified
clearly. It may also inject something new into the system, preventing correct diagnosis.

3. Make a visual inspection as part of the preliminary diagnosis routine, writing down anything that does not look right.
Note tire pressures, but do not adjust them yet. Note leaking fluids, loose nuts and bolts, or bright spots where
components may be rubbing against each other. Check the luggage compartment for unusual loads.
4. Road test the vehicle and define the condition by reproducing it several times during the road test.

5. Carry out the Road Test Quick Checks as soon as the condition is reproduced. This will identify the correct diagnostic
procedure. Carry out the Road Test Quick Checks more than once to verify they are providing a valid result. Remember,
the Road Test Quick Checks may not tell where the concern is, but they will tell where it is not.

Road Test Quick Checks

1. 24-80 km/h (15-50 miles/h): With light acceleration, a moaning noise is heard and possibly a vibration is felt in the
front floor pan. It is usually worse at a particular engine speed and at a particular throttle setting during acceleration at
that speed. It may also produce a moaning sound, depending on what component is causing it. Refer to Tip-In Moan in
the Symptom Chart.

2. Acceleration/deceleration: With slow acceleration and deceleration, a shake is sometimes noticed in the steering
wheel/column, seats, front floor pan, front door trim panel or front end sheet metal. It is a low frequency vibration
(around 9-15 cycles per second). It may or may not be increased by applying brakes lightly. Refer to Idle Boom/Shake
/Vibration in the Symptom Chart.

3. High speed: A vibration is felt in the front floor pan or seats with no visible shake, but with an accompanying sound or
rumble, buzz, hum, drone or booming noise. Coast with the clutch pedal depressed or shift control selector lever in
neutral and engine idling. If vibration is still evident, it may be related to wheels, tires, front brake discs, wheel hubs
or front wheel bearings. Refer to High Speed Shake in the Symptom Chart.

4. Engine rpm sensitive: A vibration is felt whenever the engine reaches a particular rpm. It will disappear in neutral
coasts. The vibration can be duplicated by operating the engine at the problem rpm while the vehicle is stationary. It
can be caused by any component, from the accessory drive belt to the torque converter which turns at engine speed
when the vehicle is stopped. Refer to High Speed Shake in the Symptom Chart.

5. Noise/vibration while turning: Clicking, popping, or grinding noises may be due to a worn, damaged, or incorrectly
installed front wheel bearing, rear drive half shaft or CV joint.

6. Noise/vibration that is road speed relative: This noise/vibration can be diagnosed independent of engine speed or gear
selected (engine speed varies but torque and road speed remain constant). The cause may be a rear drive
axle/differential whine.
Road Conditions

An experienced technician will always establish a route that will be used for all NVH diagnosis road tests. The road selected
should be reasonably smooth, level and free of undulations (unless a particular condition needs to be identified). A smooth
asphalt road that allows driving over a range of speeds is best. Gravel or bumpy roads are unsuitable because of the additional
road noise produced. Once the route is established and consistently used, the road noise variable is eliminated from the test
results.


NOTE: Some concerns may be apparent only on smooth asphalt roads.

If a customer complains of a noise or vibration on a particular road and only on a particular road, the source of the concern
may be the road surface. If possible, try to test the vehicle on the same type of road.

Vehicle Preparation

Carry out a thorough visual inspection of the vehicle before carrying out the road test. Note anything which is unusual. Do not
repair or adjust any condition until the road test is carried out, unless the vehicle is inoperative or the condition could pose a
hazard to the technician.
After verifying the condition has been corrected, make sure all components removed have been installed.

Lift Test

After a road test, it is sometimes useful to do a similar test on a lift.

When carrying out the high-speed shake diagnosis or engine accessory vibration diagnosis on a lift, observe the following
precautions:


WARNING: If only one drive wheel is allowed to rotate, speed must be limited to 55 km/h (35 miles/h) indicated on the
speedometer since actual wheel speed will be twice that indicated on the speedometer. Speed exceeding 55 km/h (35 miles/h)
or allowing the drive wheel to hang unsupported could result in tire disintegration, differential failure, constant velocity joint

6 Oil temperature sensor 7 High speed CAN from suspension control module 8 CJB (central junction box)
System Operation
















ELECTRONIC
DIFFERENTIAL
-
5.0L
SUPERCHARGER
VEHICLES
FROM
2010MY

The
multi-plate
clutch
prevents
excessive
differential
slip and
therefore
maximizes
the
traction
performance
of
the
vehicle.
This
is
fundamentally
different
from
'braked'
traction
control
systems,
which
can
only
counteract
differential
slip when it
occurs.

A
certain
amount
of
differential
slip is
required
to
allow
the
vehicle
to
turn
corners
and
to
remain
stable
under
control
of
the
ABS
(anti-lock
brake
system).
The
system
is
completely
automatic and
does
not
require
any
special
driver
input.

The
multi-plate
clutch
actively
controls
the
torque
flow
through
the
differential
and
optimizes
the
torque
distribution in
the
driveline.
The
clutch
biases
the
torque
from
the
differential
to
the
wheel
with the
higher
grip
and prevents
the
wheel
with the
lower
grip
from
spinning.

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Thrust race 7 Shim 8 Thrust plate 9 Dished washer 10 Bolt (10 off) 11 Clutch basket 12 Multi-plate clutch and pressure disc 13 Differential case 14 Screw (2 off) 15 Bearing assembly 16 Oil seal 17 Oil slinger inner 18 Oil slinger outer 19 Input flange 20 Pinion nut 21 Collapsible spacer 22 Shim 23 Bearing assembly 24 Pinion shaft 25 Mounting insulator inner (2 off) 26 Mounting insulator rubber (2 off) 27 Mounting insulator outer (2 off) 28 Carrier 29 Oil seal 30 Drain plug 31 Vent 32 Breather cap 33 Shim 34 Bearing assembly 35 Drive gear 36 Shim 37 RH sun gear 38 Circlip 39 Thrust washer (4 off) 40 Planet gear (4 off) 41 Pin (2 off) 42 Shaft 43 LH sun gear 44 Shim 45 Bearing assembly 46 Shim 47 Dowel (2 off) 48 Bolt (4 off) 49 Reduction gear casing 50 Reduction gear 51 Shaft 52 Temperature sensor 53 O-ring seal 54 Motor 55 Screw (4 off) 56 Cover 57 Output actuator locking pin 58 Bolt (9 off)